diff --git a/lib/pry/commands.rb b/lib/pry/commands.rb
index 450e81aa..99d5b8ab 100644
--- a/lib/pry/commands.rb
+++ b/lib/pry/commands.rb
@@ -7,7 +7,6 @@ require "pry/default_commands/shell"
 require "pry/default_commands/introspection"
 require "pry/default_commands/easter_eggs"
 
-require "pry/extended_commands/user_command_api"
 require "pry/extended_commands/experimental"
 
 class Pry
diff --git a/lib/pry/extended_commands/user_command_api.rb b/lib/pry/extended_commands/user_command_api.rb
deleted file mode 100644
index 63290cab..00000000
--- a/lib/pry/extended_commands/user_command_api.rb
+++ /dev/null
@@ -1,122 +0,0 @@
-class Pry
-  module ExtendedCommands
-
-    UserCommandAPI = Pry::CommandSet.new do
-
-      command "define-command", "Define a command in the session, use same syntax as `command` method for command API" do |arg|
-        if arg.nil?
-          raise CommandError, "Provide an arg!"
-        end
-
-        prime_string = "command #{arg_string}\n"
-        command_string = _pry_.r(target, prime_string)
-
-        eval_string.replace <<-HERE
-          _pry_.commands.instance_eval do
-            #{command_string}
-          end
-        HERE
-
-      end
-
-      command_class "reload-command", "Reload a Pry command." do
-        banner <<-BANNER
-          Usage: reload-command command
-          Reload a Pry command.
-        BANNER
-
-        def process
-          command = _pry_.commands.find_command(args.first)
-
-          if command.nil?
-            raise Pry::CommandError, 'No command found.'
-          end
-
-          source_code = command.block.source
-          file, lineno = command.block.source_location
-
-          set = Pry::CommandSet.new do
-            eval(source_code, binding, file, lineno)
-          end
-
-          _pry_.commands.delete(command.name)
-          _pry_.commands.import(set)
-        end
-      end
-
-      command_class "edit-command", "Edit a Pry command." do
-        banner <<-BANNER
-          Usage: edit-command [options] command
-          Edit a Pry command.
-        BANNER
-
-        def initialize env
-          @pry = env[:pry_instance]
-          @command = nil
-          super(env)
-        end
-
-        def options(opt)
-          opt.on :p, :patch, 'Perform a in-memory edit of a command'
-        end
-
-        def process
-          @command = @pry.commands.find_command(args.first)
-
-          if @command.nil?
-            raise Pry::CommandError, 'Command not found.'
-          end
-
-          case
-          when opts.present?(:patch)
-            edit_temporarily
-          else
-            edit_permanently
-          end
-        end
-
-        def edit_permanently
-          file, lineno = @command.block.source_location
-          invoke_editor(file, lineno)
-
-          command_set = silence_warnings do
-            eval File.read(file), TOPLEVEL_BINDING, file, 1
-          end
-
-          unless command_set.is_a?(Pry::CommandSet)
-            raise Pry::CommandError,
-                  "Expected file '#{file}' to return a CommandSet"
-          end
-
-          @pry.commands.delete(@command.name)
-          @pry.commands.import(command_set)
-          set_file_and_dir_locals(file)
-        end
-
-        def edit_temporarily
-          source_code = Pry::Method(@command.block).source
-          modified_code = nil
-
-          temp_file do |f|
-            f.write(source_code)
-            f.flush
-
-            invoke_editor(f.path, 1)
-            modified_code = File.read(f.path)
-          end
-
-          command_set = CommandSet.new do
-            silence_warnings do
-              pry = Pry.new :input => StringIO.new(modified_code)
-              pry.rep(binding)
-            end
-          end
-
-          @pry.commands.delete(@command.name)
-          @pry.commands.import(command_set)
-        end
-      end
-
-    end
-  end
-end